/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
    background-color: #f7f7f7;
    color: #333;
    line-height: 1.5;
}
ul, li {
    list-style: none;
}
a {
    text-decoration: none;
    color: inherit;
}
img {
    display: block;
    max-width: 100%;
}
button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}
textarea {
    resize: none;
    outline: none;
    font-family: inherit;
}